Paper-perforating machine



(No Model.) v A. E. LA ROE. PAPER PERFORATING MAOHINE. No. 410,643. Patented Sept. 10, 1889.

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UNITED STATES PATENT OFFICE.

ALBERT E. LA ROE, OF CINCINNATI, OHIO.

PAPER-PERFORA TING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 410,643, dated September 10, 1889.

Application filed August 8, 1888. Serial No. 282,235. (No model.)

To all whom it may concern:

Be it known that I, ALBERT E. LA ROE, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Paper-Perforating Machines, of which the following is a specification.

My invention relates to improvements in machines for perforating paper for the purpose of forming stencil designs for embroidering and other purposes.

The invention will be first fully described in connection with the accompanying drawings, and then particularly referred to and pointed out in the claims.

Referring to the drawings, in which like parts are indicated by similar reference-letters wherever they occur throughout the various views, Figure l is a front elevation of my machine ready for use. Fig. 2 is a detail view, upon an enlarged scale, of the puncturing-head and guide-finger. Fig. 3 is a simi lar view of amodification of the head adapted for use when the design is to be punctured through light sheet metal or substances that require a drilling instead of a puncturing operation.

The frame of the machine consists of the iron legs A, the metal top A, which may be either a plate or frame, and a metal upright standard A which is secured upon the top or frame A. Upon top of frame or plate A is secured a wooden top B, which has ahinged leaf B, which is swung down, as shown, to economize space, or which may be elevated upon a level with top 13 and sustained by a prop I), for convenience in holding the finished and unfinished work. Underneath the front and back edges of the top B are rollers journaled in brackets c, which are secured to the under side of the top. The purpose of these is to adjust and stretch the cloth apron C, which forms the bed upon which the paper rests while itis being perforated. Each roller (only one of these is shown) is provided with a ratchet c and pawl c for retaining the cloth stretched tight after it has been adjusted by winding from one roll to the other, when the parts, under the action of the perforator, become worn by use.

The perforator-head consists of a yoke D,

which has a lower perforated extension (Z, within which is fitted the vertically-reciprocating needle-bar E. At the upper end of the yoke D is a transverse crank-shaft e, mounted between cone-bearin gs e, which pass through the sides of the yoke and into c0unter depressions or centers in the ends of the shaft. The wrist of this shaft is coupled to the upper end of the needle-bar E by the connecting-rod e The lower end of the needle-bar is bored to receive the perforatingneedle F, and the bored portion'is exteriorly threaded and slit to form fingers, which are clamped upon the needle by the screw-nut e. To one side of the yoke D is fitted the vertically-adjustable finger G, the lower end of which is curved to bring it directly under the needle-bar. The vertical portion 9 of the finger is perforated to receive and pass the needle F. The stroke of the needle into and through the material to be perforated is regulated by moving the finger up or down in its guides. It is fixed in the desired position by a setscrew g, which is tapped through one of the guides to bear upon the finger. The perforator-head, comprising the yoke D and its attachments, depends from a bar II by a connecting-rod D, which is secured to the top of the yoke and hinged at its upper end to the said rod 11, which rod is pivoted upon a bolt which passes through it and the upper bifurcated end of a swivelstud I, which stud is mounted to turn in the upper angular end a of the standard A The barH is thus capable of an up-and-down rocking movement upon its pin or fulcrum 2', and also a horizontal swinging movement by reason of its swiveled support being journaled in the angle a of standard A and the perforatorhead is also capable of a swinging vibratory movement in the plane of the bar H upon the hinge-pin cl of rod D. Upon the opposite end of bar II from which the perforator-head is suspended is a weight H, which counterbalances the head. It is arranged to slide upon bar II, and has a set-screw h to fix it in the desired position. Ordinarily the weight is so set as to a little more than counterpoise the head, so that in its normal position the finger g is held above the cloth 0. The weight, striking against the upright, limits the upper movement of the head and finger.

A rapid vertically-reciprocating movementis imparted to the needle-bar and needle by means pf a band a, which passes over a grooved pulley 6 upon the shaft 6 and over a double-grooved pulley h, mounted upon a stud secured upon bar H. Another doublegrooved pulley h is similarly mounted upon the bar H near its fulcrum. A band h passes over both the pulleys h 71. and anotherbandh passes over pulley k and a grooved pulley j upon the shaft J, which has its bearings in the frame of the machine.

and over a band-wheel K, driven by a treadle L through a pitman M.

The machine is operated as follows: The number of sheets it is desired to perforate being placed together upon the bed 0, the upper sheet having drawn or otherwise pro duced upon it the desired design, thefinger g is adjusted so that the needle Fwhen in its lower position will protrude far enough below the finger to perforate the pile ofpapenusually twenty to forty sheets, depending upon the thickness of the paper. The operator then takes hold of the yoke D and elc vates the perforator-head above the paper until the,

limit myself to the exact details of construc-' tion shown, but consider myself fairly entitled to such mere mechanical changes as would be suggested by the description above given.

Motion is im-. parted to the shaft J by a band j, which passes over a pulley 7' secured upon shaft J bevel-pinion 6 which is secured upon the upper end of the spindle E, in contact with a similar pinion 2?, which is secured upon the transverse shaft 6 The spindle is to be fitted with a drill instead of a puncturing-point, as shown in Figs. 1 and 2. The operator must of course lift and lower the head to make each perforation.

What I claim as new, and desire to secure by Letters Patent, -is

1. The combination, in a perforating-ma chine, of the frame, the bed, a vertically-rocking and horizontally-swinging bar mounted above said bed-plate, the swinging yoke D, the bar connecting it with the end of the swinging bar, the vertically reciprocating point-carrier mounted in said yoke, and the adjustable finger G, perforated at g for the perforating-point.

2. The combination, in a paper-perforating machine, of the frame, the bed-plate, the upwardly-proj ecting standardAz, the verticallyrocking and horizontally-swinging bar H, mounted upon said standard, the rod D, hinged to said arm 'H,tl1e perforator-head fitted with the reciprocating point-carrier secured to the lower end of said rod D, the transverse shaft J, means for imparting motion to-said shaft, and the bands and pulleys for communicating motion from said shaft to the reciprocating point-carrier, arranged substantially as and for thepurpose set forth.

ALBERT E. LA ROE.

WVitnesses:

FRANK L. MILLWARD, GEO. J. MURRAY. 

